含硫非调质钢GS35C-A浇铸性能优化的工艺实践

特殊钢 ›› 2017, Vol. 38 ›› Issue (4): 43-45.

含硫非调质钢GS35C-A浇铸性能优化的工艺实践

姬旦旦, 李富伟, 李智, 王秋坤, 刘会杰

邢台钢铁有限责任公司炼钢厂，邢台052000

收稿日期:2017-02-09 出版日期:2017-08-01 发布日期:2022-07-20
作者简介:姬旦旦(1984-)，男，硕士(2012年河北理工大学)，工程师，2007年山西工程职业学院毕业,洁净钢研究。

Practice Process of Optimization on Casting Performance of Non-Quenched-Tempered Steel GS35C-A Bearing Sulfur

Ji Dandan, Li Fuwei, Li Zhi, Wang Qiukun , Liu Huijie

Steelmaking Works, Xingtai Iron and Steel Co Ltd, Xingtai 052000

Received:2017-02-09 Published:2017-08-01 Online:2022-07-20

摘要/Abstract

摘要： 分析了硫合金化工艺和渣系等因素对GS35C-A钢（/%:0.320.39C,≤0.40Si,0.500.80Mn,≤0.045P,0.0150.055S,≥0.020Al）浇铸性能的影响,并将原LF（硫合金化）-RH-钙处理工艺优化成LF-RH-钙处理-硫合金化工艺。结果表明,（1）采用先硫合金化后钙处理工艺生产时,水口结瘤物以CaS、CaO-Al₂O₃-CaS复合夹杂物为主;（2）采用先钙处理后硫合金化工艺生产时,连浇炉数由原来先硫合金化后钙处理工艺的2炉提高至6炉;（3）渣系优化后（R 5.669.55）,RH喂硫线前显微夹杂物数量比优化前降低了84%,RH离站显微夹杂物数量由9.09个/mm²降低至5.06个/mm²。

Abstract: Effect of factors including sulfur alloying process and slag series on casting performance of steel GS35C-A (/% : 0. 32 ~0. 39C, ≤0. 40Si, 0. 50 ~0. 80Mn, ≤ 0. 045P, 0. 015 ~0. 055S, ≥0. 020Al) has been analyzed, and the original LF (sulfur alloying)-RH-calcium treatment process is modified to optimized LF-RH-calcium treatment-sulfur alloying process. Results show that with using calcium treatment after sulfur alloying process, in casting the main nozzle blocking materials are CaS and CaO-Al₂O₃ -CaS complex inclusions ； as using sulfur alloying after calcium treatment process the number of continuous-continuous casting heats increases from original 2 heats by using calcium treatment after sulfur alloying process to 6 heats; and with using optimized slag series (R 5. 66 ~9. 55) , before RH feeding sulfur wire the number of micro-inclusions in steel decreases by 84% as compared with original process, and the number of micro-inclusions at end RH decreases from 9. 09 inclusions /mm² to 5. 06 inclusions /mm².

姬旦旦, 李富伟, 李智, 王秋坤, 刘会杰. 含硫非调质钢GS35C-A浇铸性能优化的工艺实践[J]. 特殊钢, 2017, 38(4): 43-45.

Ji Dandan, Li Fuwei, Li Zhi, Wang Qiukun , Liu Huijie. Practice Process of Optimization on Casting Performance of Non-Quenched-Tempered Steel GS35C-A Bearing Sulfur[J]. Special Steel, 2017, 38(4): 43-45.